US 11,721,261 B2
Display panel, methodfor driving the same and display device
Xigang Liu, Wuhan (CN); Huijun Jin, Wuhan (CN); Chao Dai, Wuhan (CN); and Benshun Zhong, Wuhan (CN)
Assigned to Wuhan Tianma Microelectronics Co., Ltd., Wuhan (CN)
Filed by Wuhan Tianma Microelectronics Co., Ltd., Wuhan (CN)
Filed on Apr. 19, 2022, as Appl. No. 17/723,731.
Claims priority of application No. 202111165712.5 (CN), filed on Sep. 30, 2021.
Prior Publication US 2022/0238056 A1, Jul. 28, 2022
Int. Cl. G09G 3/20 (2006.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G09G 3/20 (2013.01) [G06F 3/044 (2013.01); G06F 3/04166 (2019.05); G09G 2310/0286 (2013.01); G09G 2310/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a display area, in which a plurality of scanning signal lines are provided; and
a non-display area, in which a shift register circuit is provided,
wherein the shift register circuit comprises a plurality of cascaded shift register units, and each of the plurality of shift register units comprises a scanning control terminal, a signal output terminal, a first level signal terminal, a pull-down module and a pull-down control module;
wherein in one of the plurality of shift register units, the pull-down module is electrically connected to a first node, a second node, the first level signal terminal and the signal output terminal separately;
the pull-down module is configured to transmit a first level signal of the first level signal terminal to the second node and the signal output terminal under the control of a potential of the first node; the pull-down module comprises at least a first transistor; a gate of the first transistor is electrically connected to the first node; the pull-down control module is electrically connected to the first node and the scanning control terminal separately; and the pull-down control module is configured to control a scanning control signal of the scanning control terminal to be transmitted to the first node;
wherein in a scanning phase of a frame, the scanning control signal is at an enable level controlling the first transistor to be turned on; in a non-scanning phase of the frame, the scanning control signal comprises a disable level controlling the first transistor to be turned off; and
wherein the signal output terminal of the each of the plurality of shift register units is electrically connected to a respective one of the plurality of scanning signal lines; in the scanning phase, the signal output terminal of the each of the plurality of shift register units sequentially outputs a scanning signal at an enable level; and in the non-scanning phase, the signal output terminal of the each of the plurality of shift register units outputs a scanning signal at a disable level.